15123001005 has 24 divisors (see below), whose sum is σ = 29957945472. Its totient is φ = 6913371744.

The previous prime is 15123000967. The next prime is 15123001021. The reversal of 15123001005 is 50010032151.

It is not a de Polignac number, because 15123001005 - 2⁹ = 15123000493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24004449 + ... + 24005078.

It is an arithmetic number, because the mean of its divisors is an integer number (1248247728).

Almost surely, 2^15123001005 is an apocalyptic number.

15123001005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15123001005 is a deficient number, since it is larger than the sum of its proper divisors (14834944467).

15123001005 is a wasteful number, since it uses less digits than its factorization.

15123001005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48009545 (or 48009542 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

Adding to 15123001005 its reverse (50010032151), we get a palindrome (65133033156).

The spelling of 15123001005 in words is "fifteen billion, one hundred twenty-three million, one thousand, five".